bug fixed for mysql parser

src/main/java/com/alibaba/druid/sql/ast/expr/SQLBinaryOperator.java

@@ -47,11 +47,16 @@ public enum SQLBinaryOperator {
     LessThanOrEqual("<=", 110), 
     LessThanOrEqualOrGreaterThan("<=>",110),
     LessThanOrGreater("<>", 110), 
-    Like("LIKE", 110), 
+    
+    Like("LIKE", 110),
+    NotLike("NOT LIKE", 110), 
+    
+    RLike("RLIKE", 110),
+    NotRLike("NOT RLIKE", 110),
+    
     NotEqual("!=", 110), 
     NotLessThan("!<", 110),
     NotGreaterThan("!>", 110), 
-    NotLike("NOT LIKE", 110), 
     IsNot("IS NOT", 110), 
     Escape("ESCAPE", 110), 
     RegExp("REGEXP", 110),

src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlExprParser.java

@@ -52,7 +52,16 @@ public class MySqlExprParser extends SQLExprParser {
     }
 
     public SQLExpr relationalRest(SQLExpr expr) throws ParserException {
-        if (lexer.token() == Token.IDENTIFIER && "REGEXP".equalsIgnoreCase(lexer.stringVal())) {
+        if (identifierEquals("REGEXP")) {
+            lexer.nextToken();
+            SQLExpr rightExp = equality();
+
+            rightExp = relationalRest(rightExp);
+
+            return new SQLBinaryOpExpr(expr, SQLBinaryOperator.RegExp, rightExp);
+        }
+        
+        if (identifierEquals("RLIKE")) {
             lexer.nextToken();
             SQLExpr rightExp = equality();
 
@@ -78,7 +87,7 @@ public class MySqlExprParser extends SQLExprParser {
     }
 
     public SQLExpr notRationalRest(SQLExpr expr) {
-        if (lexer.token() == Token.IDENTIFIER && "REGEXP".equalsIgnoreCase(lexer.stringVal())) {
+        if (identifierEquals("REGEXP")) {
             lexer.nextToken();
             SQLExpr rightExp = primary();
 
@@ -86,6 +95,15 @@ public class MySqlExprParser extends SQLExprParser {
 
             return new SQLBinaryOpExpr(expr, SQLBinaryOperator.NotRegExp, rightExp);
         }
+        
+        if (identifierEquals("RLIKE")) {
+            lexer.nextToken();
+            SQLExpr rightExp = primary();
+
+            rightExp = relationalRest(rightExp);
+
+            return new SQLBinaryOpExpr(expr, SQLBinaryOperator.NotRLike, rightExp);
+        }
 
         return super.notRationalRest(expr);
     }

src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleSchemaStatVisitor.java

@@ -149,6 +149,8 @@ public class OracleSchemaStatVisitor extends SchemaStatVisitor implements Oracle
     public OracleSchemaStatVisitor(){
         this.variants.put("DUAL", null);
         this.variants.put("NOTFOUND", null);
+        this.variants.put("TRUE", null);
+        this.variants.put("FALSE", null);
     }
 
     protected Column getColumn(SQLExpr expr) {

src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java

@@ -217,6 +217,7 @@ public class SQLExprParser extends SQLParser {
             case SCHEMA:
             case AT:
             case COLUMN:
+            case IF:
                 sqlExpr = new SQLIdentifierExpr(lexer.stringVal());
                 lexer.nextToken();
                 break;

src/main/java/com/alibaba/druid/sql/visitor/SchemaStatVisitor.java

@@ -14,6 +14,7 @@ import com.alibaba.druid.sql.ast.SQLOrderBy;
 import com.alibaba.druid.sql.ast.expr.SQLAggregateExpr;
 import com.alibaba.druid.sql.ast.expr.SQLAllColumnExpr;
 import com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr;
+import com.alibaba.druid.sql.ast.expr.SQLCurrentOfCursorExpr;
 import com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr;
 import com.alibaba.druid.sql.ast.expr.SQLInListExpr;
 import com.alibaba.druid.sql.ast.expr.SQLInSubQueryExpr;
@@ -867,4 +868,8 @@ public class SchemaStatVisitor extends SQLASTVisitorAdapter {
     public boolean visit(SQLCommentStatement x) {
         return false;
     }
+    
+    public boolean visit(SQLCurrentOfCursorExpr x) {
+        return false;
+    }
 }